Perkins: "Oh, Arthur! Thank goodness, I didn't know what to do the best, whether to wait here for you or not. I've just sent an owl to your home but you've obviously missed it - an urgent message came ten minutes ago"

Arthur: "I know about the regurgitating toilet"

Perkins: "No, no, it's not the toilet, it's the Potter boy's hearing - they've changed the time and venue - it starts at eight o'clock now and it's down in the old Courtroom Ten"